SB2026072098 - NULL pointer dereference in Linux kernel bluetooth

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Main Vulnerability Database SB2026072098

SB2026072098 - NULL pointer dereference in Linux kernel bluetooth

Published: July 20, 2026

Security Bulletin ID SB2026072098
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Adjecent network
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) NULL pointer dereference (CVE-ID: CVE-2026-64128)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to a null pointer dereference in iso_recv() in the Bluetooth ISO subsystem when processing an ISO_END frame without a prior ISO_START on a fresh ISO connection. A remote attacker can send a specially crafted Bluetooth ISO frame sequence to cause a denial of service.

For BIS, exploitation does not require pairing and can be triggered by a broadcaster on the air.


Remediation

Install update from vendor's website.

References